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Enter the World’s biggest fundraising swimming challenge!

Hosted at over 450 UK pools on 28 to 30 March 2025.
Individual and team challenges - Choose your distance!

Our Charity Partners

Cancer Research UK is the largest charitable funder of cancer research in the world and will stay at the forefront of the global fight against cancer. 1 in 2 of us will get cancer. All of us can support the research that will beat it.

Marie Curie is here for people with any terminal illness, and those close to them – from diagnosis to bereavement. Our nurses and healthcare assistants support families directly across the UK. Our free support line can help with any question about end of life. And we campaign for structural change and fund vital research that improves end of life for everyone.

Sign up for Swimathon 2025!

Grab the goggles let's get swimming! Swimathon 2025 is a fantastic opportunity to support our two charity partners, Cancer Research UK and Marie Curie whilst challenging yourself to swim further than you have before!

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OUR PARTNERS

CHARITY BENEFICIARY

 
 

CHARITY BENEFICIARY

 
 

CHARITY BENEFICIARY

 
 

EVENT PARTNER

EVENT PARTNER

EVENT PARTNER

FUNDRAISING PLATFORM PARTNER